JPS5527433A - Producing device of electric welded steel tube - Google Patents

Producing device of electric welded steel tube

Info

Publication number
JPS5527433A
JPS5527433A JP9953478A JP9953478A JPS5527433A JP S5527433 A JPS5527433 A JP S5527433A JP 9953478 A JP9953478 A JP 9953478A JP 9953478 A JP9953478 A JP 9953478A JP S5527433 A JPS5527433 A JP S5527433A
Authority
JP
Japan
Prior art keywords
rolls
steel pipe
welded
producing device
squeeze
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP9953478A
Other languages
Japanese (ja)
Other versions
JPS5948711B2 (en
Inventor
Shuzo Watanabe
Hitomaro Ohashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Steel Corp
Original Assignee
Kawasaki Steel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP9953478A priority Critical patent/JPS5948711B2/en
Publication of JPS5527433A publication Critical patent/JPS5527433A/en
Publication of JPS5948711B2 publication Critical patent/JPS5948711B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

PURPOSE: The producing device of electric welded steel tube which comprises disposing shape-fluctuation-preventing rolls before and/or behind squeeze rolls and which reduces shape fluctuations of weld zone and is capable of performing stable welding.
CONSTITUTION: A work coil 3 is fitted onto the end part of the steel pipe 1 to be welded and the steel pipe is upset by a pair of squeeze rolls 2, 2 from the right and left and is advanced in the arrow direction. Next, idling rolls 4 are disposed before and/or behind the right and left squeeze rolls 2, 2 and the weld zone 1a of the steel pipe 1 is welded. Here, the respective rolls are born by two or more backup rolls 5, 5 from their back and the rolls 2 and rolls 4 are rotatably constituted while being restrained in the right and left directions and in the pipe making direction. Hence, the revolutions of all the rolls are of centerless type and this enables the rolls to be constituted to extremely small deameters, enables the distance between each roll to be reduced and permits highly efficient and stable welding.
COPYRIGHT: (C)1980,JPO&Japio
JP9953478A 1978-08-17 1978-08-17 ERW steel pipe manufacturing equipment Expired JPS5948711B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9953478A JPS5948711B2 (en) 1978-08-17 1978-08-17 ERW steel pipe manufacturing equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9953478A JPS5948711B2 (en) 1978-08-17 1978-08-17 ERW steel pipe manufacturing equipment

Publications (2)

Publication Number Publication Date
JPS5527433A true JPS5527433A (en) 1980-02-27
JPS5948711B2 JPS5948711B2 (en) 1984-11-28

Family

ID=14249867

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9953478A Expired JPS5948711B2 (en) 1978-08-17 1978-08-17 ERW steel pipe manufacturing equipment

Country Status (1)

Country Link
JP (1) JPS5948711B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58184289A (en) * 1982-04-22 1983-10-27 日立電線株式会社 Resistor composition for self-temperature controllable heater

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58184289A (en) * 1982-04-22 1983-10-27 日立電線株式会社 Resistor composition for self-temperature controllable heater

Also Published As

Publication number Publication date
JPS5948711B2 (en) 1984-11-28

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